Effect of Gradual Precipitation of α2 Particles on Mechanical Properties of Ti–6Al–4V Alloy
| Autor: | Víctor H. López-Morelos, Martín R. Barajas-Álvarez, Alberto Ruiz |
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| Rok vydání: | 2018 |
| Předmět: |
Equiaxed crystals
Materials science Precipitation (chemistry) Tension (physics) Scanning electron microscope Mechanical Engineering Alloy 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Indentation hardness 0104 chemical sciences Mechanics of Materials Ultimate tensile strength engineering General Materials Science Composite material 0210 nano-technology |
| Zdroj: | MRS Advances. 3:3629-3634 |
| ISSN: | 2059-8521 |
| DOI: | 10.1557/adv.2018.663 |
| Popis: | The present investigation focused on evaluating the effects of different amounts of precipitates on tension and hardness properties of a Ti–6Al–4V alloy, for this, two sets of samples with bimodal and equiaxed microstructures were obtained by heat treatment process. After this, the samples were aged at 545 °C for holding times of 100 and 200 h. Observation of the aged samples in the scanning electron microscope revealed fine α2 (Ti3Al) particles precipitating in the α matrix of the alloy. Uni-axial tension tests and Vickers microhardness measurements were conducted on the unaged and aged samples. Experimental results show that ultimate strength and hardness of bimodal and equiaxed microstructures are significantly affected by the heat treatment applied to produce such microstructures. Also, it was found that the precipitation of α2 particles drastically reduced the plastic response of the Ti–6Al–4V alloy. |
| Databáze: | OpenAIRE |
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